.tree {
  display: block;
  padding: 20px 0;
  .tree_item {
    width: 32.2%;
    display: inline-block;
    .tree_item_icon {
      display: inline-block;
      width: 15px;
      height: 15px;
      border-radius: 50%;
      color: @color-black;
      >img{
        vertical-align: middle;
        width: 100%;
        height: 100%;
      }
    }
    .tree_item_txt {
      text-align: left;
      display: inline-block;
      font-size: 12px;
      color: @color-black;
      min-width: 72px;
    }
  }
}

@media only screen and(max-width: 321px){
  .tree{
    .tree_item{
      .tree_item_txt{
        text-align: center;
      }
    }
  }
}